with radial clamping due to axial loading of at least one pair of conical surfaces

Introduced: January 1990

Full Title

Full titles differ between systems:

IPC:

Couplings for rigidly connecting two coaxial shafts or other movable machine elements > for attachment of a member on a shaft or on a shaft-end > with clamping hub; with hub and longitudinal key > with radial clamping due to axial loading of at least one pair of conical surfaces

CPC:

Couplings for rigidly connecting two coaxial shafts or other movable machine elements (attachment of wheels to axles for railway carriages B60B; for attachment of cranks to their shafts F16C3/10) > for attachment of a member on a shaft or on a shaft-end (attachment of marine propellers on shafts B63H23/34) > with clamping hub; with hub and longitudinal key > with radial clamping due to axial loading of at least one pair of conical surfaces

Of 5 combined children, 3 exist in both systems.

2 codes are CPC-only extensions.

Note: 2 CPC extensions are marked as secondary classification only.

1 shared codes have differing titles between IPC and CPC.

Child Classifications

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F16D 1/091 and comprising a chamber including a tapered piston moved axially by fluid pressure to effect clamping since 2006 IPC+CPC Available in IPC and CPC
F16D 1/092 the pair of conical mating surfaces being provided on the coupled hub and shaft since 2006 IPC+CPC Available in IPC and CPC
F16D 1/093 using one or more elastic segmented conical rings forming at least one of the conical surfaces, the rings being expanded or contracted to effect clamping (F16D1/091 takes precedence) since 2006 IPC+CPC Available in IPC and CPC
F16D 2001/0903 2nd only CPC only CPC only
F16D 2001/0906 2nd only CPC only CPC only

Top Applicants

Top Applicants (IPC)

Class F16,2013–2023, worldwide · Source: EPO PATSTAT

SCHAEFFLER TECHNOLOGIES & COMPANY DE 21,545
ZAHNRADFABRIK FRIEDRICHSHAFEN DE 9,446
TOYOTA MOTOR CORPORATION 7,215
HYUNDAI MOTOR COMPANY KR 6,846
ROBERT BOSCH DE 6,106
NTN CORPORATION 5,305
SKF SE 4,219
KIA MOTORS CORPORATION KR 3,852
NSK 3,850
HONDA MOTOR COMPANY 3,639

Top Applicants (CPC)

Class F16,2013–2023, worldwide · Source: EPO PATSTAT

SCHAEFFLER TECHNOLOGIES & COMPANY DE 22,817
ZAHNRADFABRIK FRIEDRICHSHAFEN DE 10,523
HYUNDAI MOTOR COMPANY KR 7,933
ROBERT BOSCH DE 7,059
KIA MOTORS CORPORATION KR 4,867
SKF SE 4,729
TOYOTA MOTOR CORPORATION JP 4,111
FORD GLOBAL TECHNOLOGIES US 3,838
GM GLOBAL TECHNOLOGY OPERATIONS US 3,575
TOYOTA MOTOR CORPORATION 3,499